Introduction; 1. From Trinity to Mind: The Intensional Basis of the Law; 2. Potency and Supposita; 3. Will: The Scholastic heritage; 4. Will, Power, and Pretensionality; 5. Ars combinatoria as Urdoxa; 6. A New Method of Teaching Law; 7. Power and Obligation in the 1660s; 8. Power and Obligation in the Elementa Iuris Naturalis: The state space; Conclusion; Bibliography.